Chilli con carne comes in and out of fashion but if we're honest, even if it does remind us of our less sophisticated student days, it's always a favourite. As students I doubt we gave much thought to the nutritional value of the meal yet it was and still is the perfect food for study. Rich in fibre and slow releasing carbohydrates for improved mental performance, kidney beans are also a good source of iron for energy, magnesium to ease nervous tension, and the beef gives us much needed protein for satiety and cellular repair.